Add OVERRIDE to chrome/browser/chromeos/.

chrome/browser/chromeos/login/help_app_launcher.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_HELP_APP_LAUNCHER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_HELP_APP_LAUNCHER_H_
 #pragma once
 
+#include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/chromeos/login/login_html_dialog.h"
 #include "ui/gfx/native_widget_types.h"
 
 namespace chromeos {
 
 // Provides help content during OOBE / login.
 // Based on connectivity state (offline/online) shows help topic dialog
 // or launches HelpApp in BWSI mode.
@@ skipping 21 matching lines @@
   virtual ~HelpAppLauncher();
 
   // Shows specified help topic.
   void ShowHelpTopic(HelpTopic help_topic_id);
 
   // Returns true if the dialog is currently open.
   bool is_open() const { return dialog_.get() && dialog_->is_open(); }
 
  protected:
   // LoginHtmlDialog::Delegate implementation:
-  virtual void OnDialogClosed() {}
+  virtual void OnDialogClosed() OVERRIDE {}
 
  private:
   // Shows help topic dialog for specified GURL.
   void ShowHelpTopicDialog(const GURL& topic_url);
 
   // Dialog used to display help like "Can't access your account".
   scoped_ptr<LoginHtmlDialog> dialog_;
 
   // Parent window which is passed to help dialog.
   gfx::NativeWindow parent_window_;
 
   DISALLOW_COPY_AND_ASSIGN(HelpAppLauncher);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_HELP_APP_LAUNCHER_H_